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Finding the Fourth Proportional to 359,409.60, 539,114.40 and 247,435.20

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Solution

The fourth proportional to 359,409.60, 539,114.40 and 247,435.20 is: 371,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,409.60 : 539,114.40 = 247,435.20 : x
  2. Step 2: Convert to fraction form
    359,409.60/539,114.40 = 247,435.20/x
  3. Step 3: Cross multiply
    359,409.60x = 539,114.40 × 247,435.20
  4. Step 4: Simplify right side
    359,409.60x = 133,395,879,386.88
  5. Step 5: Solve for x
    x = 133,395,879,386.88/359,409.60
  6. Step 6: Final answer
    x = 371,152.80

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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.