Home / 387,780.10-581,666.19-151,288.90

Finding the Fourth Proportional to 387,780.10, 581,666.19 and 151,288.90

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Solution

The fourth proportional to 387,780.10, 581,666.19 and 151,288.90 is: 226,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,780.10 : 581,666.19 = 151,288.90 : x
  2. Step 2: Convert to fraction form
    387,780.10/581,666.19 = 151,288.90/x
  3. Step 3: Cross multiply
    387,780.10x = 581,666.19 × 151,288.90
  4. Step 4: Simplify right side
    387,780.10x = 87,999,638,052.29
  5. Step 5: Solve for x
    x = 87,999,638,052.29/387,780.10
  6. Step 6: Final answer
    x = 226,931.81

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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.