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Finding the Fourth Proportional to 389,851.84, 537,995.46 and 220,096.90

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Solution

The fourth proportional to 389,851.84, 537,995.46 and 220,096.90 is: 303,733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,851.84 : 537,995.46 = 220,096.90 : x
  2. Step 2: Convert to fraction form
    389,851.84/537,995.46 = 220,096.90/x
  3. Step 3: Cross multiply
    389,851.84x = 537,995.46 × 220,096.90
  4. Step 4: Simplify right side
    389,851.84x = 118,411,132,960.07
  5. Step 5: Solve for x
    x = 118,411,132,960.07/389,851.84
  6. Step 6: Final answer
    x = 303,733.68

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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.