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Finding the Fourth Proportional to 268,390.10, 370,379.10 and 153,670.50

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Solution

The fourth proportional to 268,390.10, 370,379.10 and 153,670.50 is: 212,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,390.10 : 370,379.10 = 153,670.50 : x
  2. Step 2: Convert to fraction form
    268,390.10/370,379.10 = 153,670.50/x
  3. Step 3: Cross multiply
    268,390.10x = 370,379.10 × 153,670.50
  4. Step 4: Simplify right side
    268,390.10x = 56,916,341,486.55
  5. Step 5: Solve for x
    x = 56,916,341,486.55/268,390.10
  6. Step 6: Final answer
    x = 212,065.73

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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.