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Finding the Fourth Proportional to 307,689.51, 424,667.10 and 183,518.45

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Solution

The fourth proportional to 307,689.51, 424,667.10 and 183,518.45 is: 253,288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,689.51 : 424,667.10 = 183,518.45 : x
  2. Step 2: Convert to fraction form
    307,689.51/424,667.10 = 183,518.45/x
  3. Step 3: Cross multiply
    307,689.51x = 424,667.10 × 183,518.45
  4. Step 4: Simplify right side
    307,689.51x = 77,934,247,958.00
  5. Step 5: Solve for x
    x = 77,934,247,958.00/307,689.51
  6. Step 6: Final answer
    x = 253,288.61

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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.