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Finding the Fourth Proportional to 262,281.29, 393,412.59 and 84,783.65

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Solution

The fourth proportional to 262,281.29, 393,412.59 and 84,783.65 is: 127,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,281.29 : 393,412.59 = 84,783.65 : x
  2. Step 2: Convert to fraction form
    262,281.29/393,412.59 = 84,783.65/x
  3. Step 3: Cross multiply
    262,281.29x = 393,412.59 × 84,783.65
  4. Step 4: Simplify right side
    262,281.29x = 33,354,953,369.09
  5. Step 5: Solve for x
    x = 33,354,953,369.09/262,281.29
  6. Step 6: Final answer
    x = 127,172.45

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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.