Home / 386,821.02-533,817.90-217,051.50

Finding the Fourth Proportional to 386,821.02, 533,817.90 and 217,051.50

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Solution

The fourth proportional to 386,821.02, 533,817.90 and 217,051.50 is: 299,533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,821.02 : 533,817.90 = 217,051.50 : x
  2. Step 2: Convert to fraction form
    386,821.02/533,817.90 = 217,051.50/x
  3. Step 3: Cross multiply
    386,821.02x = 533,817.90 × 217,051.50
  4. Step 4: Simplify right side
    386,821.02x = 115,865,975,921.85
  5. Step 5: Solve for x
    x = 115,865,975,921.85/386,821.02
  6. Step 6: Final answer
    x = 299,533.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.