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Finding the Fourth Proportional to 379,363.95, 523,303.07 and 243,349.56

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Solution

The fourth proportional to 379,363.95, 523,303.07 and 243,349.56 is: 335,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,363.95 : 523,303.07 = 243,349.56 : x
  2. Step 2: Convert to fraction form
    379,363.95/523,303.07 = 243,349.56/x
  3. Step 3: Cross multiply
    379,363.95x = 523,303.07 × 243,349.56
  4. Step 4: Simplify right side
    379,363.95x = 127,345,570,614.40
  5. Step 5: Solve for x
    x = 127,345,570,614.40/379,363.95
  6. Step 6: Final answer
    x = 335,681.79

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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.