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Finding the Fourth Proportional to 178,854,401.60, 268,281,602.40 and 65,431,246.40

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Solution

The fourth proportional to 178,854,401.60, 268,281,602.40 and 65,431,246.40 is: 98,146,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,854,401.60 : 268,281,602.40 = 65,431,246.40 : x
  2. Step 2: Convert to fraction form
    178,854,401.60/268,281,602.40 = 65,431,246.40/x
  3. Step 3: Cross multiply
    178,854,401.60x = 268,281,602.40 × 65,431,246.40
  4. Step 4: Simplify right side
    178,854,401.60x = 17,553,999,631,221,232
  5. Step 5: Solve for x
    x = 17,553,999,631,221,232/178,854,401.60
  6. Step 6: Final answer
    x = 98,146,869.60

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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.