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Finding the Fourth Proportional to 145,407.63, 218,111.79 and 44,206.56

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Solution

The fourth proportional to 145,407.63, 218,111.79 and 44,206.56 is: 66,309.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,407.63 : 218,111.79 = 44,206.56 : x
  2. Step 2: Convert to fraction form
    145,407.63/218,111.79 = 44,206.56/x
  3. Step 3: Cross multiply
    145,407.63x = 218,111.79 × 44,206.56
  4. Step 4: Simplify right side
    145,407.63x = 9,641,971,931.34
  5. Step 5: Solve for x
    x = 9,641,971,931.34/145,407.63
  6. Step 6: Final answer
    x = 66,309.94

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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.