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Finding the Fourth Proportional to 296,952.90, 445,429.35 and 139,488.90

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Solution

The fourth proportional to 296,952.90, 445,429.35 and 139,488.90 is: 209,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,952.90 : 445,429.35 = 139,488.90 : x
  2. Step 2: Convert to fraction form
    296,952.90/445,429.35 = 139,488.90/x
  3. Step 3: Cross multiply
    296,952.90x = 445,429.35 × 139,488.90
  4. Step 4: Simplify right side
    296,952.90x = 62,132,450,059.22
  5. Step 5: Solve for x
    x = 62,132,450,059.22/296,952.90
  6. Step 6: Final answer
    x = 209,233.35

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1.5x scale

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.