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Finding the Fourth Proportional to 328,803.12, 453,335.22 and 268,312.32

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Solution

The fourth proportional to 328,803.12, 453,335.22 and 268,312.32 is: 369,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,803.12 : 453,335.22 = 268,312.32 : x
  2. Step 2: Convert to fraction form
    328,803.12/453,335.22 = 268,312.32/x
  3. Step 3: Cross multiply
    328,803.12x = 453,335.22 × 268,312.32
  4. Step 4: Simplify right side
    328,803.12x = 121,635,424,615.91
  5. Step 5: Solve for x
    x = 121,635,424,615.91/328,803.12
  6. Step 6: Final answer
    x = 369,933.91

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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.