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Finding the Fourth Proportional to 571,812.90, 858,059.55 and 216,862.80

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Solution

The fourth proportional to 571,812.90, 858,059.55 and 216,862.80 is: 325,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,812.90 : 858,059.55 = 216,862.80 : x
  2. Step 2: Convert to fraction form
    571,812.90/858,059.55 = 216,862.80/x
  3. Step 3: Cross multiply
    571,812.90x = 858,059.55 × 216,862.80
  4. Step 4: Simplify right side
    571,812.90x = 186,081,196,579.74
  5. Step 5: Solve for x
    x = 186,081,196,579.74/571,812.90
  6. Step 6: Final answer
    x = 325,423.22

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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.