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Finding the Fourth Proportional to 216,913.51, 299,337.51 and 120,108.07

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Solution

The fourth proportional to 216,913.51, 299,337.51 and 120,108.07 is: 165,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,913.51 : 299,337.51 = 120,108.07 : x
  2. Step 2: Convert to fraction form
    216,913.51/299,337.51 = 120,108.07/x
  3. Step 3: Cross multiply
    216,913.51x = 299,337.51 × 120,108.07
  4. Step 4: Simplify right side
    216,913.51x = 35,952,850,604.71
  5. Step 5: Solve for x
    x = 35,952,850,604.71/216,913.51
  6. Step 6: Final answer
    x = 165,747.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.