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Finding the Fourth Proportional to 314,327.70, 471,491.55 and 127,339.20

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Solution

The fourth proportional to 314,327.70, 471,491.55 and 127,339.20 is: 191,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,327.70 : 471,491.55 = 127,339.20 : x
  2. Step 2: Convert to fraction form
    314,327.70/471,491.55 = 127,339.20/x
  3. Step 3: Cross multiply
    314,327.70x = 471,491.55 × 127,339.20
  4. Step 4: Simplify right side
    314,327.70x = 60,039,356,783.76
  5. Step 5: Solve for x
    x = 60,039,356,783.76/314,327.70
  6. Step 6: Final answer
    x = 191,008.80

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1.5x scale

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.