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Finding the Fourth Proportional to 402,577.76, 555,681.12 and 259,337.36

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Solution

The fourth proportional to 402,577.76, 555,681.12 and 259,337.36 is: 357,965.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,577.76 : 555,681.12 = 259,337.36 : x
  2. Step 2: Convert to fraction form
    402,577.76/555,681.12 = 259,337.36/x
  3. Step 3: Cross multiply
    402,577.76x = 555,681.12 × 259,337.36
  4. Step 4: Simplify right side
    402,577.76x = 144,108,874,662.64
  5. Step 5: Solve for x
    x = 144,108,874,662.64/402,577.76
  6. Step 6: Final answer
    x = 357,965.31

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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.