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Finding the Fourth Proportional to 380,566.72, 570,903.40 and 155,959.08

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Solution

The fourth proportional to 380,566.72, 570,903.40 and 155,959.08 is: 233,960.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,566.72 : 570,903.40 = 155,959.08 : x
  2. Step 2: Convert to fraction form
    380,566.72/570,903.40 = 155,959.08/x
  3. Step 3: Cross multiply
    380,566.72x = 570,903.40 × 155,959.08
  4. Step 4: Simplify right side
    380,566.72x = 89,037,569,032.87
  5. Step 5: Solve for x
    x = 89,037,569,032.87/380,566.72
  6. Step 6: Final answer
    x = 233,960.47

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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.