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Finding the Fourth Proportional to 207,256.20, 310,884.30 and 191,509.80

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Solution

The fourth proportional to 207,256.20, 310,884.30 and 191,509.80 is: 287,264.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,256.20 : 310,884.30 = 191,509.80 : x
  2. Step 2: Convert to fraction form
    207,256.20/310,884.30 = 191,509.80/x
  3. Step 3: Cross multiply
    207,256.20x = 310,884.30 × 191,509.80
  4. Step 4: Simplify right side
    207,256.20x = 59,537,390,116.14
  5. Step 5: Solve for x
    x = 59,537,390,116.14/207,256.20
  6. Step 6: Final answer
    x = 287,264.70

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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.