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Finding the Fourth Proportional to 308,703.90, 462,364.65 and 253,407.90

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Solution

The fourth proportional to 308,703.90, 462,364.65 and 253,407.90 is: 379,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,703.90 : 462,364.65 = 253,407.90 : x
  2. Step 2: Convert to fraction form
    308,703.90/462,364.65 = 253,407.90/x
  3. Step 3: Cross multiply
    308,703.90x = 462,364.65 × 253,407.90
  4. Step 4: Simplify right side
    308,703.90x = 117,166,854,990.74
  5. Step 5: Solve for x
    x = 117,166,854,990.74/308,703.90
  6. Step 6: Final answer
    x = 379,544.46

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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.