Home / 390,622.20-586,322.10-191,167.80

Finding the Fourth Proportional to 390,622.20, 586,322.10 and 191,167.80

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Solution

The fourth proportional to 390,622.20, 586,322.10 and 191,167.80 is: 286,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,622.20 : 586,322.10 = 191,167.80 : x
  2. Step 2: Convert to fraction form
    390,622.20/586,322.10 = 191,167.80/x
  3. Step 3: Cross multiply
    390,622.20x = 586,322.10 × 191,167.80
  4. Step 4: Simplify right side
    390,622.20x = 112,085,905,948.38
  5. Step 5: Solve for x
    x = 112,085,905,948.38/390,622.20
  6. Step 6: Final answer
    x = 286,941.98

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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.