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Finding the Fourth Proportional to 307,623.15, 429,622.65 and 307,623.15

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Solution

The fourth proportional to 307,623.15, 429,622.65 and 307,623.15 is: 429,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,623.15 : 429,622.65 = 307,623.15 : x
  2. Step 2: Convert to fraction form
    307,623.15/429,622.65 = 307,623.15/x
  3. Step 3: Cross multiply
    307,623.15x = 429,622.65 × 307,623.15
  4. Step 4: Simplify right side
    307,623.15x = 132,161,872,904.35
  5. Step 5: Solve for x
    x = 132,161,872,904.35/307,623.15
  6. Step 6: Final answer
    x = 429,622.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.