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Finding the Fourth Proportional to 304,428.10, 456,642.15 and 138,216.10

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Solution

The fourth proportional to 304,428.10, 456,642.15 and 138,216.10 is: 207,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,428.10 : 456,642.15 = 138,216.10 : x
  2. Step 2: Convert to fraction form
    304,428.10/456,642.15 = 138,216.10/x
  3. Step 3: Cross multiply
    304,428.10x = 456,642.15 × 138,216.10
  4. Step 4: Simplify right side
    304,428.10x = 63,115,297,068.62
  5. Step 5: Solve for x
    x = 63,115,297,068.62/304,428.10
  6. Step 6: Final answer
    x = 207,324.15

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1.5x scale

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.