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Finding the Fourth Proportional to 144,048.40, 215,813.40 and 123,312.40

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Solution

The fourth proportional to 144,048.40, 215,813.40 and 123,312.40 is: 184,746.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,048.40 : 215,813.40 = 123,312.40 : x
  2. Step 2: Convert to fraction form
    144,048.40/215,813.40 = 123,312.40/x
  3. Step 3: Cross multiply
    144,048.40x = 215,813.40 × 123,312.40
  4. Step 4: Simplify right side
    144,048.40x = 26,612,468,306.16
  5. Step 5: Solve for x
    x = 26,612,468,306.16/144,048.40
  6. Step 6: Final answer
    x = 184,746.71

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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.