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Finding the Fourth Proportional to 253,505.76, 349,813.66 and 151,510.91

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Solution

The fourth proportional to 253,505.76, 349,813.66 and 151,510.91 is: 209,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,505.76 : 349,813.66 = 151,510.91 : x
  2. Step 2: Convert to fraction form
    253,505.76/349,813.66 = 151,510.91/x
  3. Step 3: Cross multiply
    253,505.76x = 349,813.66 × 151,510.91
  4. Step 4: Simplify right side
    253,505.76x = 53,000,585,957.03
  5. Step 5: Solve for x
    x = 53,000,585,957.03/253,505.76
  6. Step 6: Final answer
    x = 209,070.54

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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.