Home / 302,987,932.12-454,501,030.38-128,078,349.76

Finding the Fourth Proportional to 302,987,932.12, 454,501,030.38 and 128,078,349.76

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Solution

The fourth proportional to 302,987,932.12, 454,501,030.38 and 128,078,349.76 is: 192,125,612.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,987,932.12 : 454,501,030.38 = 128,078,349.76 : x
  2. Step 2: Convert to fraction form
    302,987,932.12/454,501,030.38 = 128,078,349.76/x
  3. Step 3: Cross multiply
    302,987,932.12x = 454,501,030.38 × 128,078,349.76
  4. Step 4: Simplify right side
    302,987,932.12x = 58,211,741,935,290,024
  5. Step 5: Solve for x
    x = 58,211,741,935,290,024/302,987,932.12
  6. Step 6: Final answer
    x = 192,125,612.16

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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.