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Finding the Fourth Proportional to 359,580.80, 539,954.40 and 260,436.80

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Solution

The fourth proportional to 359,580.80, 539,954.40 and 260,436.80 is: 391,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,580.80 : 539,954.40 = 260,436.80 : x
  2. Step 2: Convert to fraction form
    359,580.80/539,954.40 = 260,436.80/x
  3. Step 3: Cross multiply
    359,580.80x = 539,954.40 × 260,436.80
  4. Step 4: Simplify right side
    359,580.80x = 140,623,996,081.92
  5. Step 5: Solve for x
    x = 140,623,996,081.92/359,580.80
  6. Step 6: Final answer
    x = 391,077.60

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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.