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Finding the Fourth Proportional to 359,389.60, 539,084.40 and 318,954.40

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Solution

The fourth proportional to 359,389.60, 539,084.40 and 318,954.40 is: 478,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,389.60 : 539,084.40 = 318,954.40 : x
  2. Step 2: Convert to fraction form
    359,389.60/539,084.40 = 318,954.40/x
  3. Step 3: Cross multiply
    359,389.60x = 539,084.40 × 318,954.40
  4. Step 4: Simplify right side
    359,389.60x = 171,943,341,351.36
  5. Step 5: Solve for x
    x = 171,943,341,351.36/359,389.60
  6. Step 6: Final answer
    x = 478,431.60

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1.5x scale

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.