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Finding the Fourth Proportional to 178,430.40, 267,465.60 and 66,038.40

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Solution

The fourth proportional to 178,430.40, 267,465.60 and 66,038.40 is: 98,990.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,430.40 : 267,465.60 = 66,038.40 : x
  2. Step 2: Convert to fraction form
    178,430.40/267,465.60 = 66,038.40/x
  3. Step 3: Cross multiply
    178,430.40x = 267,465.60 × 66,038.40
  4. Step 4: Simplify right side
    178,430.40x = 17,663,000,279.04
  5. Step 5: Solve for x
    x = 17,663,000,279.04/178,430.40
  6. Step 6: Final answer
    x = 98,990.98

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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.