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Finding the Fourth Proportional to 340,307.32, 510,421.92 and 91,008.76

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Solution

The fourth proportional to 340,307.32, 510,421.92 and 91,008.76 is: 136,502.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,307.32 : 510,421.92 = 91,008.76 : x
  2. Step 2: Convert to fraction form
    340,307.32/510,421.92 = 91,008.76/x
  3. Step 3: Cross multiply
    340,307.32x = 510,421.92 × 91,008.76
  4. Step 4: Simplify right side
    340,307.32x = 46,452,866,016.02
  5. Step 5: Solve for x
    x = 46,452,866,016.02/340,307.32
  6. Step 6: Final answer
    x = 136,502.69

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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.