Home / 345,670.38-518,505.57-109,031.51

Finding the Fourth Proportional to 345,670.38, 518,505.57 and 109,031.51

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Solution

The fourth proportional to 345,670.38, 518,505.57 and 109,031.51 is: 163,547.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,670.38 : 518,505.57 = 109,031.51 : x
  2. Step 2: Convert to fraction form
    345,670.38/518,505.57 = 109,031.51/x
  3. Step 3: Cross multiply
    345,670.38x = 518,505.57 × 109,031.51
  4. Step 4: Simplify right side
    345,670.38x = 56,533,442,647.98
  5. Step 5: Solve for x
    x = 56,533,442,647.98/345,670.38
  6. Step 6: Final answer
    x = 163,547.26

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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.