Home / 215,678,390.40-323,517,585.60-143,118,979.20

Finding the Fourth Proportional to 215,678,390.40, 323,517,585.60 and 143,118,979.20

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Solution

The fourth proportional to 215,678,390.40, 323,517,585.60 and 143,118,979.20 is: 214,678,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,678,390.40 : 323,517,585.60 = 143,118,979.20 : x
  2. Step 2: Convert to fraction form
    215,678,390.40/323,517,585.60 = 143,118,979.20/x
  3. Step 3: Cross multiply
    215,678,390.40x = 323,517,585.60 × 143,118,979.20
  4. Step 4: Simplify right side
    215,678,390.40x = 46,301,506,604,320,616
  5. Step 5: Solve for x
    x = 46,301,506,604,320,616/215,678,390.40
  6. Step 6: Final answer
    x = 214,678,468.80

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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.