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Finding the Fourth Proportional to 334,742.32, 502,113.06 and 85,424.32

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Solution

The fourth proportional to 334,742.32, 502,113.06 and 85,424.32 is: 128,136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,742.32 : 502,113.06 = 85,424.32 : x
  2. Step 2: Convert to fraction form
    334,742.32/502,113.06 = 85,424.32/x
  3. Step 3: Cross multiply
    334,742.32x = 502,113.06 × 85,424.32
  4. Step 4: Simplify right side
    334,742.32x = 42,892,666,713.62
  5. Step 5: Solve for x
    x = 42,892,666,713.62/334,742.32
  6. Step 6: Final answer
    x = 128,136.37

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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.