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Finding the Fourth Proportional to 359,405.80, 539,108.70 and 352,407.40

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Solution

The fourth proportional to 359,405.80, 539,108.70 and 352,407.40 is: 528,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,405.80 : 539,108.70 = 352,407.40 : x
  2. Step 2: Convert to fraction form
    359,405.80/539,108.70 = 352,407.40/x
  3. Step 3: Cross multiply
    359,405.80x = 539,108.70 × 352,407.40
  4. Step 4: Simplify right side
    359,405.80x = 189,985,895,284.38
  5. Step 5: Solve for x
    x = 189,985,895,284.38/359,405.80
  6. Step 6: Final answer
    x = 528,611.10

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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.