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Finding the Fourth Proportional to 487,492.60, 672,735.06 and 272,630.20

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Solution

The fourth proportional to 487,492.60, 672,735.06 and 272,630.20 is: 376,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,492.60 : 672,735.06 = 272,630.20 : x
  2. Step 2: Convert to fraction form
    487,492.60/672,735.06 = 272,630.20/x
  3. Step 3: Cross multiply
    487,492.60x = 672,735.06 × 272,630.20
  4. Step 4: Simplify right side
    487,492.60x = 183,407,893,954.81
  5. Step 5: Solve for x
    x = 183,407,893,954.81/487,492.60
  6. Step 6: Final answer
    x = 376,227.03

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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.