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Finding the Fourth Proportional to 381,855.60, 572,783.40 and 293,554.80

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Solution

The fourth proportional to 381,855.60, 572,783.40 and 293,554.80 is: 440,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,855.60 : 572,783.40 = 293,554.80 : x
  2. Step 2: Convert to fraction form
    381,855.60/572,783.40 = 293,554.80/x
  3. Step 3: Cross multiply
    381,855.60x = 572,783.40 × 293,554.80
  4. Step 4: Simplify right side
    381,855.60x = 168,143,316,430.32
  5. Step 5: Solve for x
    x = 168,143,316,430.32/381,855.60
  6. Step 6: Final answer
    x = 440,332.20

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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.