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Finding the Fourth Proportional to 442,685.63, 610,888.12 and 261,456.23

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Solution

The fourth proportional to 442,685.63, 610,888.12 and 261,456.23 is: 360,798.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,685.63 : 610,888.12 = 261,456.23 : x
  2. Step 2: Convert to fraction form
    442,685.63/610,888.12 = 261,456.23/x
  3. Step 3: Cross multiply
    442,685.63x = 610,888.12 × 261,456.23
  4. Step 4: Simplify right side
    442,685.63x = 159,720,502,979.67
  5. Step 5: Solve for x
    x = 159,720,502,979.67/442,685.63
  6. Step 6: Final answer
    x = 360,798.94

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Double scale
Find fourth proportional to 442,686.63, 610,889.50 and 261,457.23
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.