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Finding the Fourth Proportional to 371,775.60, 557,047.80 and 213,728.40

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Solution

The fourth proportional to 371,775.60, 557,047.80 and 213,728.40 is: 320,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,775.60 : 557,047.80 = 213,728.40 : x
  2. Step 2: Convert to fraction form
    371,775.60/557,047.80 = 213,728.40/x
  3. Step 3: Cross multiply
    371,775.60x = 557,047.80 × 213,728.40
  4. Step 4: Simplify right side
    371,775.60x = 119,056,935,017.52
  5. Step 5: Solve for x
    x = 119,056,935,017.52/371,775.60
  6. Step 6: Final answer
    x = 320,238.70

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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.