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Finding the Fourth Proportional to 613,020.40, 918,983.40 and 238,956.40

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Solution

The fourth proportional to 613,020.40, 918,983.40 and 238,956.40 is: 358,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,020.40 : 918,983.40 = 238,956.40 : x
  2. Step 2: Convert to fraction form
    613,020.40/918,983.40 = 238,956.40/x
  3. Step 3: Cross multiply
    613,020.40x = 918,983.40 × 238,956.40
  4. Step 4: Simplify right side
    613,020.40x = 219,596,964,923.76
  5. Step 5: Solve for x
    x = 219,596,964,923.76/613,020.40
  6. Step 6: Final answer
    x = 358,221.30

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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.