Home / 314,788.80-472,298.40-127,819.20

Finding the Fourth Proportional to 314,788.80, 472,298.40 and 127,819.20

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Solution

The fourth proportional to 314,788.80, 472,298.40 and 127,819.20 is: 191,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,788.80 : 472,298.40 = 127,819.20 : x
  2. Step 2: Convert to fraction form
    314,788.80/472,298.40 = 127,819.20/x
  3. Step 3: Cross multiply
    314,788.80x = 472,298.40 × 127,819.20
  4. Step 4: Simplify right side
    314,788.80x = 60,368,803,649.28
  5. Step 5: Solve for x
    x = 60,368,803,649.28/314,788.80
  6. Step 6: Final answer
    x = 191,775.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.