Home / 390,623.20-586,323.60-191,168.80

Finding the Fourth Proportional to 390,623.20, 586,323.60 and 191,168.80

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Solution

The fourth proportional to 390,623.20, 586,323.60 and 191,168.80 is: 286,943.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,623.20 : 586,323.60 = 191,168.80 : x
  2. Step 2: Convert to fraction form
    390,623.20/586,323.60 = 191,168.80/x
  3. Step 3: Cross multiply
    390,623.20x = 586,323.60 × 191,168.80
  4. Step 4: Simplify right side
    390,623.20x = 112,086,779,023.68
  5. Step 5: Solve for x
    x = 112,086,779,023.68/390,623.20
  6. Step 6: Final answer
    x = 286,943.48

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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.