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Finding the Fourth Proportional to 313,630.50, 432,810.54 and 170,390.64

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Solution

The fourth proportional to 313,630.50, 432,810.54 and 170,390.64 is: 235,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,630.50 : 432,810.54 = 170,390.64 : x
  2. Step 2: Convert to fraction form
    313,630.50/432,810.54 = 170,390.64/x
  3. Step 3: Cross multiply
    313,630.50x = 432,810.54 × 170,390.64
  4. Step 4: Simplify right side
    313,630.50x = 73,746,864,909.35
  5. Step 5: Solve for x
    x = 73,746,864,909.35/313,630.50
  6. Step 6: Final answer
    x = 235,139.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.