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Finding the Fourth Proportional to 387,807.64, 581,397.06 and 174,419.32

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Solution

The fourth proportional to 387,807.64, 581,397.06 and 174,419.32 is: 261,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,807.64 : 581,397.06 = 174,419.32 : x
  2. Step 2: Convert to fraction form
    387,807.64/581,397.06 = 174,419.32/x
  3. Step 3: Cross multiply
    387,807.64x = 581,397.06 × 174,419.32
  4. Step 4: Simplify right side
    387,807.64x = 101,406,879,855.20
  5. Step 5: Solve for x
    x = 101,406,879,855.20/387,807.64
  6. Step 6: Final answer
    x = 261,487.58

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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.