Home / 257,838.24-386,254.80-145,174.08

Finding the Fourth Proportional to 257,838.24, 386,254.80 and 145,174.08

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Solution

The fourth proportional to 257,838.24, 386,254.80 and 145,174.08 is: 217,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,838.24 : 386,254.80 = 145,174.08 : x
  2. Step 2: Convert to fraction form
    257,838.24/386,254.80 = 145,174.08/x
  3. Step 3: Cross multiply
    257,838.24x = 386,254.80 × 145,174.08
  4. Step 4: Simplify right side
    257,838.24x = 56,074,185,235.58
  5. Step 5: Solve for x
    x = 56,074,185,235.58/257,838.24
  6. Step 6: Final answer
    x = 217,478.16

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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.