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Finding the Fourth Proportional to 371,320.40, 556,980.60 and 245,349.20

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Solution

The fourth proportional to 371,320.40, 556,980.60 and 245,349.20 is: 368,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,320.40 : 556,980.60 = 245,349.20 : x
  2. Step 2: Convert to fraction form
    371,320.40/556,980.60 = 245,349.20/x
  3. Step 3: Cross multiply
    371,320.40x = 556,980.60 × 245,349.20
  4. Step 4: Simplify right side
    371,320.40x = 136,654,744,625.52
  5. Step 5: Solve for x
    x = 136,654,744,625.52/371,320.40
  6. Step 6: Final answer
    x = 368,023.80

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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.