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Finding the Fourth Proportional to 243,526.40, 365,347.20 and 77,314.40

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Solution

The fourth proportional to 243,526.40, 365,347.20 and 77,314.40 is: 115,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,526.40 : 365,347.20 = 77,314.40 : x
  2. Step 2: Convert to fraction form
    243,526.40/365,347.20 = 77,314.40/x
  3. Step 3: Cross multiply
    243,526.40x = 365,347.20 × 77,314.40
  4. Step 4: Simplify right side
    243,526.40x = 28,246,599,559.68
  5. Step 5: Solve for x
    x = 28,246,599,559.68/243,526.40
  6. Step 6: Final answer
    x = 115,989.89

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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.