Home / 487,220.42-672,366.87-272,369.54

Finding the Fourth Proportional to 487,220.42, 672,366.87 and 272,369.54

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Solution

The fourth proportional to 487,220.42, 672,366.87 and 272,369.54 is: 375,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,220.42 : 672,366.87 = 272,369.54 : x
  2. Step 2: Convert to fraction form
    487,220.42/672,366.87 = 272,369.54/x
  3. Step 3: Cross multiply
    487,220.42x = 672,366.87 × 272,369.54
  4. Step 4: Simplify right side
    487,220.42x = 183,132,251,731.31
  5. Step 5: Solve for x
    x = 183,132,251,731.31/487,220.42
  6. Step 6: Final answer
    x = 375,871.47

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1.5x scale

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.