Home / 390,398,637.60-585,189,366.48-131,524,400.16

Finding the Fourth Proportional to 390,398,637.60, 585,189,366.48 and 131,524,400.16

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Solution

The fourth proportional to 390,398,637.60, 585,189,366.48 and 131,524,400.16 is: 197,148,947.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,398,637.60 : 585,189,366.48 = 131,524,400.16 : x
  2. Step 2: Convert to fraction form
    390,398,637.60/585,189,366.48 = 131,524,400.16/x
  3. Step 3: Cross multiply
    390,398,637.60x = 585,189,366.48 × 131,524,400.16
  4. Step 4: Simplify right side
    390,398,637.60x = 76,966,680,406,292,416
  5. Step 5: Solve for x
    x = 76,966,680,406,292,416/390,398,637.60
  6. Step 6: Final answer
    x = 197,148,947.24

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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.