Home / 280,229,514.06-420,384,386.10-86,157,222.63

Finding the Fourth Proportional to 280,229,514.06, 420,384,386.10 and 86,157,222.63

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Solution

The fourth proportional to 280,229,514.06, 420,384,386.10 and 86,157,222.63 is: 129,248,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229,514.06 : 420,384,386.10 = 86,157,222.63 : x
  2. Step 2: Convert to fraction form
    280,229,514.06/420,384,386.10 = 86,157,222.63/x
  3. Step 3: Cross multiply
    280,229,514.06x = 420,384,386.10 × 86,157,222.63
  4. Step 4: Simplify right side
    280,229,514.06x = 36,219,151,143,393,576
  5. Step 5: Solve for x
    x = 36,219,151,143,393,576/280,229,514.06
  6. Step 6: Final answer
    x = 129,248,167.40

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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.