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Finding the Fourth Proportional to 418,221.90, 577,192.32 and 234,477.90

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Solution

The fourth proportional to 418,221.90, 577,192.32 and 234,477.90 is: 323,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,221.90 : 577,192.32 = 234,477.90 : x
  2. Step 2: Convert to fraction form
    418,221.90/577,192.32 = 234,477.90/x
  3. Step 3: Cross multiply
    418,221.90x = 577,192.32 × 234,477.90
  4. Step 4: Simplify right side
    418,221.90x = 135,338,843,089.73
  5. Step 5: Solve for x
    x = 135,338,843,089.73/418,221.90
  6. Step 6: Final answer
    x = 323,605.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.