Home / 390,827.20-586,333.28-311,166.40

Finding the Fourth Proportional to 390,827.20, 586,333.28 and 311,166.40

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Solution

The fourth proportional to 390,827.20, 586,333.28 and 311,166.40 is: 466,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,827.20 : 586,333.28 = 311,166.40 : x
  2. Step 2: Convert to fraction form
    390,827.20/586,333.28 = 311,166.40/x
  3. Step 3: Cross multiply
    390,827.20x = 586,333.28 × 311,166.40
  4. Step 4: Simplify right side
    390,827.20x = 182,447,215,937.79
  5. Step 5: Solve for x
    x = 182,447,215,937.79/390,827.20
  6. Step 6: Final answer
    x = 466,823.23

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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.