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Finding the Fourth Proportional to 302,585.40, 454,023.90 and 213,647.40

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Solution

The fourth proportional to 302,585.40, 454,023.90 and 213,647.40 is: 320,574.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,585.40 : 454,023.90 = 213,647.40 : x
  2. Step 2: Convert to fraction form
    302,585.40/454,023.90 = 213,647.40/x
  3. Step 3: Cross multiply
    302,585.40x = 454,023.90 × 213,647.40
  4. Step 4: Simplify right side
    302,585.40x = 97,001,025,772.86
  5. Step 5: Solve for x
    x = 97,001,025,772.86/302,585.40
  6. Step 6: Final answer
    x = 320,574.05

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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.