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Finding the Fourth Proportional to 358,318.80, 537,478.20 and 319,611.60

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Solution

The fourth proportional to 358,318.80, 537,478.20 and 319,611.60 is: 479,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,318.80 : 537,478.20 = 319,611.60 : x
  2. Step 2: Convert to fraction form
    358,318.80/537,478.20 = 319,611.60/x
  3. Step 3: Cross multiply
    358,318.80x = 537,478.20 × 319,611.60
  4. Step 4: Simplify right side
    358,318.80x = 171,784,267,467.12
  5. Step 5: Solve for x
    x = 171,784,267,467.12/358,318.80
  6. Step 6: Final answer
    x = 479,417.40

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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.