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Finding the Fourth Proportional to 202,950.70, 304,512.45 and 128,128.30

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Solution

The fourth proportional to 202,950.70, 304,512.45 and 128,128.30 is: 192,247.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,950.70 : 304,512.45 = 128,128.30 : x
  2. Step 2: Convert to fraction form
    202,950.70/304,512.45 = 128,128.30/x
  3. Step 3: Cross multiply
    202,950.70x = 304,512.45 × 128,128.30
  4. Step 4: Simplify right side
    202,950.70x = 39,016,662,547.34
  5. Step 5: Solve for x
    x = 39,016,662,547.34/202,950.70
  6. Step 6: Final answer
    x = 192,247.00

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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.