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Finding the Fourth Proportional to 310,295.48, 465,433.92 and 85,669.62

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Solution

The fourth proportional to 310,295.48, 465,433.92 and 85,669.62 is: 128,501.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,295.48 : 465,433.92 = 85,669.62 : x
  2. Step 2: Convert to fraction form
    310,295.48/465,433.92 = 85,669.62/x
  3. Step 3: Cross multiply
    310,295.48x = 465,433.92 × 85,669.62
  4. Step 4: Simplify right side
    310,295.48x = 39,873,547,061.51
  5. Step 5: Solve for x
    x = 39,873,547,061.51/310,295.48
  6. Step 6: Final answer
    x = 128,501.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.