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Finding the Fourth Proportional to 207,256.70, 310,885.06 and 191,510.30

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Solution

The fourth proportional to 207,256.70, 310,885.06 and 191,510.30 is: 287,265.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,256.70 : 310,885.06 = 191,510.30 : x
  2. Step 2: Convert to fraction form
    207,256.70/310,885.06 = 191,510.30/x
  3. Step 3: Cross multiply
    207,256.70x = 310,885.06 × 191,510.30
  4. Step 4: Simplify right side
    207,256.70x = 59,537,691,106.12
  5. Step 5: Solve for x
    x = 59,537,691,106.12/207,256.70
  6. Step 6: Final answer
    x = 287,265.46

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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.