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Finding the Fourth Proportional to 370,318.32, 510,545.34 and 278,047.08

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Solution

The fourth proportional to 370,318.32, 510,545.34 and 278,047.08 is: 383,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,318.32 : 510,545.34 = 278,047.08 : x
  2. Step 2: Convert to fraction form
    370,318.32/510,545.34 = 278,047.08/x
  3. Step 3: Cross multiply
    370,318.32x = 510,545.34 × 278,047.08
  4. Step 4: Simplify right side
    370,318.32x = 141,955,640,994.61
  5. Step 5: Solve for x
    x = 141,955,640,994.61/370,318.32
  6. Step 6: Final answer
    x = 383,334.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.