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Finding the Fourth Proportional to 379,389.66, 523,801.80 and 243,482.19

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Solution

The fourth proportional to 379,389.66, 523,801.80 and 243,482.19 is: 336,162.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,389.66 : 523,801.80 = 243,482.19 : x
  2. Step 2: Convert to fraction form
    379,389.66/523,801.80 = 243,482.19/x
  3. Step 3: Cross multiply
    379,389.66x = 523,801.80 × 243,482.19
  4. Step 4: Simplify right side
    379,389.66x = 127,536,409,389.94
  5. Step 5: Solve for x
    x = 127,536,409,389.94/379,389.66
  6. Step 6: Final answer
    x = 336,162.06

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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.