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Finding the Fourth Proportional to 314,871.40, 472,364.70 and 127,901.80

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Solution

The fourth proportional to 314,871.40, 472,364.70 and 127,901.80 is: 191,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,871.40 : 472,364.70 = 127,901.80 : x
  2. Step 2: Convert to fraction form
    314,871.40/472,364.70 = 127,901.80/x
  3. Step 3: Cross multiply
    314,871.40x = 472,364.70 × 127,901.80
  4. Step 4: Simplify right side
    314,871.40x = 60,416,295,386.46
  5. Step 5: Solve for x
    x = 60,416,295,386.46/314,871.40
  6. Step 6: Final answer
    x = 191,876.10

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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.