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Finding the Fourth Proportional to 268,453,402.80, 402,381,505.80 and 147,371,751.60

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Solution

The fourth proportional to 268,453,402.80, 402,381,505.80 and 147,371,751.60 is: 220,893,707.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,453,402.80 : 402,381,505.80 = 147,371,751.60 : x
  2. Step 2: Convert to fraction form
    268,453,402.80/402,381,505.80 = 147,371,751.60/x
  3. Step 3: Cross multiply
    268,453,402.80x = 402,381,505.80 × 147,371,751.60
  4. Step 4: Simplify right side
    268,453,402.80x = 59,299,667,321,191,560
  5. Step 5: Solve for x
    x = 59,299,667,321,191,560/268,453,402.80
  6. Step 6: Final answer
    x = 220,893,707.07

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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.