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Finding the Fourth Proportional to 303,121.20, 453,904.20 and 289,124.40

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Solution

The fourth proportional to 303,121.20, 453,904.20 and 289,124.40 is: 432,944.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,121.20 : 453,904.20 = 289,124.40 : x
  2. Step 2: Convert to fraction form
    303,121.20/453,904.20 = 289,124.40/x
  3. Step 3: Cross multiply
    303,121.20x = 453,904.20 × 289,124.40
  4. Step 4: Simplify right side
    303,121.20x = 131,234,779,482.48
  5. Step 5: Solve for x
    x = 131,234,779,482.48/303,121.20
  6. Step 6: Final answer
    x = 432,944.91

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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.