Home / 390,845.80-586,088.22-166,086.40

Finding the Fourth Proportional to 390,845.80, 586,088.22 and 166,086.40

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Solution

The fourth proportional to 390,845.80, 586,088.22 and 166,086.40 is: 249,052.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,845.80 : 586,088.22 = 166,086.40 : x
  2. Step 2: Convert to fraction form
    390,845.80/586,088.22 = 166,086.40/x
  3. Step 3: Cross multiply
    390,845.80x = 586,088.22 × 166,086.40
  4. Step 4: Simplify right side
    390,845.80x = 97,341,282,542.21
  5. Step 5: Solve for x
    x = 97,341,282,542.21/390,845.80
  6. Step 6: Final answer
    x = 249,052.91

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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.