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Finding the Fourth Proportional to 304,319.40, 456,479.10 and 198,565.80

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Solution

The fourth proportional to 304,319.40, 456,479.10 and 198,565.80 is: 297,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,319.40 : 456,479.10 = 198,565.80 : x
  2. Step 2: Convert to fraction form
    304,319.40/456,479.10 = 198,565.80/x
  3. Step 3: Cross multiply
    304,319.40x = 456,479.10 × 198,565.80
  4. Step 4: Simplify right side
    304,319.40x = 90,641,137,674.78
  5. Step 5: Solve for x
    x = 90,641,137,674.78/304,319.40
  6. Step 6: Final answer
    x = 297,848.70

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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.