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Finding the Fourth Proportional to 296,911.30, 445,366.95 and 260,047.30

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Solution

The fourth proportional to 296,911.30, 445,366.95 and 260,047.30 is: 390,070.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,911.30 : 445,366.95 = 260,047.30 : x
  2. Step 2: Convert to fraction form
    296,911.30/445,366.95 = 260,047.30/x
  3. Step 3: Cross multiply
    296,911.30x = 445,366.95 × 260,047.30
  4. Step 4: Simplify right side
    296,911.30x = 115,816,472,856.74
  5. Step 5: Solve for x
    x = 115,816,472,856.74/296,911.30
  6. Step 6: Final answer
    x = 390,070.95

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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.