Home / 210,368,429.60-315,403,345.20-80,926,023.20

Finding the Fourth Proportional to 210,368,429.60, 315,403,345.20 and 80,926,023.20

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Solution

The fourth proportional to 210,368,429.60, 315,403,345.20 and 80,926,023.20 is: 121,331,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,368,429.60 : 315,403,345.20 = 80,926,023.20 : x
  2. Step 2: Convert to fraction form
    210,368,429.60/315,403,345.20 = 80,926,023.20/x
  3. Step 3: Cross multiply
    210,368,429.60x = 315,403,345.20 × 80,926,023.20
  4. Step 4: Simplify right side
    210,368,429.60x = 25,524,338,431,012,808
  5. Step 5: Solve for x
    x = 25,524,338,431,012,808/210,368,429.60
  6. Step 6: Final answer
    x = 121,331,601.32

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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.