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Finding the Fourth Proportional to 387,624.96, 581,443.20 and 255,352.32

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Solution

The fourth proportional to 387,624.96, 581,443.20 and 255,352.32 is: 383,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,624.96 : 581,443.20 = 255,352.32 : x
  2. Step 2: Convert to fraction form
    387,624.96/581,443.20 = 255,352.32/x
  3. Step 3: Cross multiply
    387,624.96x = 581,443.20 × 255,352.32
  4. Step 4: Simplify right side
    387,624.96x = 148,472,870,068.22
  5. Step 5: Solve for x
    x = 148,472,870,068.22/387,624.96
  6. Step 6: Final answer
    x = 383,032.27

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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.