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Finding the Fourth Proportional to 615,139.16, 848,890.85 and 343,190.87

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Solution

The fourth proportional to 615,139.16, 848,890.85 and 343,190.87 is: 473,602.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,139.16 : 848,890.85 = 343,190.87 : x
  2. Step 2: Convert to fraction form
    615,139.16/848,890.85 = 343,190.87/x
  3. Step 3: Cross multiply
    615,139.16x = 848,890.85 × 343,190.87
  4. Step 4: Simplify right side
    615,139.16x = 291,331,585,960.06
  5. Step 5: Solve for x
    x = 291,331,585,960.06/615,139.16
  6. Step 6: Final answer
    x = 473,602.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.