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Finding the Fourth Proportional to 376,528.65, 564,967.70 and 139,953.45

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Solution

The fourth proportional to 376,528.65, 564,967.70 and 139,953.45 is: 209,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,528.65 : 564,967.70 = 139,953.45 : x
  2. Step 2: Convert to fraction form
    376,528.65/564,967.70 = 139,953.45/x
  3. Step 3: Cross multiply
    376,528.65x = 564,967.70 × 139,953.45
  4. Step 4: Simplify right side
    376,528.65x = 79,069,178,053.80
  5. Step 5: Solve for x
    x = 79,069,178,053.80/376,528.65
  6. Step 6: Final answer
    x = 209,995.12

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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.