Home / 487,264.32-672,421.68-272,403.36

Finding the Fourth Proportional to 487,264.32, 672,421.68 and 272,403.36

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Solution

The fourth proportional to 487,264.32, 672,421.68 and 272,403.36 is: 375,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,264.32 : 672,421.68 = 272,403.36 : x
  2. Step 2: Convert to fraction form
    487,264.32/672,421.68 = 272,403.36/x
  3. Step 3: Cross multiply
    487,264.32x = 672,421.68 × 272,403.36
  4. Step 4: Simplify right side
    487,264.32x = 183,169,924,968.85
  5. Step 5: Solve for x
    x = 183,169,924,968.85/487,264.32
  6. Step 6: Final answer
    x = 375,914.91

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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.