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Finding the Fourth Proportional to 217,254,648.64, 299,738,045.44 and 123,158,706.88

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Solution

The fourth proportional to 217,254,648.64, 299,738,045.44 and 123,158,706.88 is: 169,917,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,254,648.64 : 299,738,045.44 = 123,158,706.88 : x
  2. Step 2: Convert to fraction form
    217,254,648.64/299,738,045.44 = 123,158,706.88/x
  3. Step 3: Cross multiply
    217,254,648.64x = 299,738,045.44 × 123,158,706.88
  4. Step 4: Simplify right side
    217,254,648.64x = 36,915,350,079,129,080
  5. Step 5: Solve for x
    x = 36,915,350,079,129,080/217,254,648.64
  6. Step 6: Final answer
    x = 169,917,423.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.