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Finding the Fourth Proportional to 245,127.68, 338,223.68 and 143,106.80

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Solution

The fourth proportional to 245,127.68, 338,223.68 and 143,106.80 is: 197,456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,127.68 : 338,223.68 = 143,106.80 : x
  2. Step 2: Convert to fraction form
    245,127.68/338,223.68 = 143,106.80/x
  3. Step 3: Cross multiply
    245,127.68x = 338,223.68 × 143,106.80
  4. Step 4: Simplify right side
    245,127.68x = 48,402,108,529.02
  5. Step 5: Solve for x
    x = 48,402,108,529.02/245,127.68
  6. Step 6: Final answer
    x = 197,456.72

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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.