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Finding the Fourth Proportional to 553,688.31, 830,601.72 and 216,685.43

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Solution

The fourth proportional to 553,688.31, 830,601.72 and 216,685.43 is: 325,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,688.31 : 830,601.72 = 216,685.43 : x
  2. Step 2: Convert to fraction form
    553,688.31/830,601.72 = 216,685.43/x
  3. Step 3: Cross multiply
    553,688.31x = 830,601.72 × 216,685.43
  4. Step 4: Simplify right side
    553,688.31x = 179,979,289,209.26
  5. Step 5: Solve for x
    x = 179,979,289,209.26/553,688.31
  6. Step 6: Final answer
    x = 325,055.25

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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.