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Finding the Fourth Proportional to 303,438.80, 455,158.20 and 93,049.40

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Solution

The fourth proportional to 303,438.80, 455,158.20 and 93,049.40 is: 139,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,438.80 : 455,158.20 = 93,049.40 : x
  2. Step 2: Convert to fraction form
    303,438.80/455,158.20 = 93,049.40/x
  3. Step 3: Cross multiply
    303,438.80x = 455,158.20 × 93,049.40
  4. Step 4: Simplify right side
    303,438.80x = 42,352,197,415.08
  5. Step 5: Solve for x
    x = 42,352,197,415.08/303,438.80
  6. Step 6: Final answer
    x = 139,574.10

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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.