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Finding the Fourth Proportional to 340,297.68, 510,407.52 and 90,999.12

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Solution

The fourth proportional to 340,297.68, 510,407.52 and 90,999.12 is: 136,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,297.68 : 510,407.52 = 90,999.12 : x
  2. Step 2: Convert to fraction form
    340,297.68/510,407.52 = 90,999.12/x
  3. Step 3: Cross multiply
    340,297.68x = 510,407.52 × 90,999.12
  4. Step 4: Simplify right side
    340,297.68x = 46,446,635,161.38
  5. Step 5: Solve for x
    x = 46,446,635,161.38/340,297.68
  6. Step 6: Final answer
    x = 136,488.25

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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.