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Finding the Fourth Proportional to 359,783.81, 539,577.19 and 135,126.87

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Solution

The fourth proportional to 359,783.81, 539,577.19 and 135,126.87 is: 202,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,783.81 : 539,577.19 = 135,126.87 : x
  2. Step 2: Convert to fraction form
    359,783.81/539,577.19 = 135,126.87/x
  3. Step 3: Cross multiply
    359,783.81x = 539,577.19 × 135,126.87
  4. Step 4: Simplify right side
    359,783.81x = 72,911,376,808.10
  5. Step 5: Solve for x
    x = 72,911,376,808.10/359,783.81
  6. Step 6: Final answer
    x = 202,653.30

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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.