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Finding the Fourth Proportional to 345,152.60, 515,264.44 and 291,993.92

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Solution

The fourth proportional to 345,152.60, 515,264.44 and 291,993.92 is: 435,905.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,152.60 : 515,264.44 = 291,993.92 : x
  2. Step 2: Convert to fraction form
    345,152.60/515,264.44 = 291,993.92/x
  3. Step 3: Cross multiply
    345,152.60x = 515,264.44 × 291,993.92
  4. Step 4: Simplify right side
    345,152.60x = 150,454,083,672.21
  5. Step 5: Solve for x
    x = 150,454,083,672.21/345,152.60
  6. Step 6: Final answer
    x = 435,905.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.