Home / 280,932,187.90-420,558,699.84-169,931,936.56

Finding the Fourth Proportional to 280,932,187.90, 420,558,699.84 and 169,931,936.56

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Solution

The fourth proportional to 280,932,187.90, 420,558,699.84 and 169,931,936.56 is: 254,390,053.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,932,187.90 : 420,558,699.84 = 169,931,936.56 : x
  2. Step 2: Convert to fraction form
    280,932,187.90/420,558,699.84 = 169,931,936.56/x
  3. Step 3: Cross multiply
    280,932,187.90x = 420,558,699.84 × 169,931,936.56
  4. Step 4: Simplify right side
    280,932,187.90x = 71,466,354,300,966,960
  5. Step 5: Solve for x
    x = 71,466,354,300,966,960/280,932,187.90
  6. Step 6: Final answer
    x = 254,390,053.47

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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.