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Finding the Fourth Proportional to 487,570.29, 672,851.28 and 272,730.34

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Solution

The fourth proportional to 487,570.29, 672,851.28 and 272,730.34 is: 376,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,570.29 : 672,851.28 = 272,730.34 : x
  2. Step 2: Convert to fraction form
    487,570.29/672,851.28 = 272,730.34/x
  3. Step 3: Cross multiply
    487,570.29x = 672,851.28 × 272,730.34
  4. Step 4: Simplify right side
    487,570.29x = 183,506,958,363.84
  5. Step 5: Solve for x
    x = 183,506,958,363.84/487,570.29
  6. Step 6: Final answer
    x = 376,370.26

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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.