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Finding the Fourth Proportional to 418,539.52, 577,668.32 and 248,740.80

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Solution

The fourth proportional to 418,539.52, 577,668.32 and 248,740.80 is: 343,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,539.52 : 577,668.32 = 248,740.80 : x
  2. Step 2: Convert to fraction form
    418,539.52/577,668.32 = 248,740.80/x
  3. Step 3: Cross multiply
    418,539.52x = 577,668.32 × 248,740.80
  4. Step 4: Simplify right side
    418,539.52x = 143,689,680,051.46
  5. Step 5: Solve for x
    x = 143,689,680,051.46/418,539.52
  6. Step 6: Final answer
    x = 343,312.10

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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.