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Finding the Fourth Proportional to 243,878.30, 365,817.45 and 103,618.70

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Solution

The fourth proportional to 243,878.30, 365,817.45 and 103,618.70 is: 155,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,878.30 : 365,817.45 = 103,618.70 : x
  2. Step 2: Convert to fraction form
    243,878.30/365,817.45 = 103,618.70/x
  3. Step 3: Cross multiply
    243,878.30x = 365,817.45 × 103,618.70
  4. Step 4: Simplify right side
    243,878.30x = 37,905,528,606.32
  5. Step 5: Solve for x
    x = 37,905,528,606.32/243,878.30
  6. Step 6: Final answer
    x = 155,428.05

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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.