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Finding the Fourth Proportional to 153,946.45, 215,000.15 and 153,946.45

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Solution

The fourth proportional to 153,946.45, 215,000.15 and 153,946.45 is: 215,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,946.45 : 215,000.15 = 153,946.45 : x
  2. Step 2: Convert to fraction form
    153,946.45/215,000.15 = 153,946.45/x
  3. Step 3: Cross multiply
    153,946.45x = 215,000.15 × 153,946.45
  4. Step 4: Simplify right side
    153,946.45x = 33,098,509,841.97
  5. Step 5: Solve for x
    x = 33,098,509,841.97/153,946.45
  6. Step 6: Final answer
    x = 215,000.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.