Home / 387,784.40-581,689.56-107,278.16

Finding the Fourth Proportional to 387,784.40, 581,689.56 and 107,278.16

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Solution

The fourth proportional to 387,784.40, 581,689.56 and 107,278.16 is: 160,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,784.40 : 581,689.56 = 107,278.16 : x
  2. Step 2: Convert to fraction form
    387,784.40/581,689.56 = 107,278.16/x
  3. Step 3: Cross multiply
    387,784.40x = 581,689.56 × 107,278.16
  4. Step 4: Simplify right side
    387,784.40x = 62,402,585,688.01
  5. Step 5: Solve for x
    x = 62,402,585,688.01/387,784.40
  6. Step 6: Final answer
    x = 160,920.83

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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.