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Finding the Fourth Proportional to 292,842.40, 439,263.60 and 71,226.40

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Solution

The fourth proportional to 292,842.40, 439,263.60 and 71,226.40 is: 106,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,842.40 : 439,263.60 = 71,226.40 : x
  2. Step 2: Convert to fraction form
    292,842.40/439,263.60 = 71,226.40/x
  3. Step 3: Cross multiply
    292,842.40x = 439,263.60 × 71,226.40
  4. Step 4: Simplify right side
    292,842.40x = 31,287,164,879.04
  5. Step 5: Solve for x
    x = 31,287,164,879.04/292,842.40
  6. Step 6: Final answer
    x = 106,839.60

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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.