Home / 487,038.47-672,111.12-272,178.48

Finding the Fourth Proportional to 487,038.47, 672,111.12 and 272,178.48

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Solution

The fourth proportional to 487,038.47, 672,111.12 and 272,178.48 is: 375,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,038.47 : 672,111.12 = 272,178.48 : x
  2. Step 2: Convert to fraction form
    487,038.47/672,111.12 = 272,178.48/x
  3. Step 3: Cross multiply
    487,038.47x = 672,111.12 × 272,178.48
  4. Step 4: Simplify right side
    487,038.47x = 182,934,179,672.14
  5. Step 5: Solve for x
    x = 182,934,179,672.14/487,038.47
  6. Step 6: Final answer
    x = 375,605.20

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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.