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Finding the Fourth Proportional to 216,368.64, 298,600.15 and 130,354.70

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Solution

The fourth proportional to 216,368.64, 298,600.15 and 130,354.70 is: 179,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,368.64 : 298,600.15 = 130,354.70 : x
  2. Step 2: Convert to fraction form
    216,368.64/298,600.15 = 130,354.70/x
  3. Step 3: Cross multiply
    216,368.64x = 298,600.15 × 130,354.70
  4. Step 4: Simplify right side
    216,368.64x = 38,923,931,643.15
  5. Step 5: Solve for x
    x = 38,923,931,643.15/216,368.64
  6. Step 6: Final answer
    x = 179,896.36

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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.