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Finding the Fourth Proportional to 571,277.80, 856,916.70 and 144,812.80

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Solution

The fourth proportional to 571,277.80, 856,916.70 and 144,812.80 is: 217,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,277.80 : 856,916.70 = 144,812.80 : x
  2. Step 2: Convert to fraction form
    571,277.80/856,916.70 = 144,812.80/x
  3. Step 3: Cross multiply
    571,277.80x = 856,916.70 × 144,812.80
  4. Step 4: Simplify right side
    571,277.80x = 124,092,506,693.76
  5. Step 5: Solve for x
    x = 124,092,506,693.76/571,277.80
  6. Step 6: Final answer
    x = 217,219.20

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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.