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Finding the Fourth Proportional to 299,087.60, 448,631.40 and 266,428.40

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Solution

The fourth proportional to 299,087.60, 448,631.40 and 266,428.40 is: 399,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,087.60 : 448,631.40 = 266,428.40 : x
  2. Step 2: Convert to fraction form
    299,087.60/448,631.40 = 266,428.40/x
  3. Step 3: Cross multiply
    299,087.60x = 448,631.40 × 266,428.40
  4. Step 4: Simplify right side
    299,087.60x = 119,528,146,091.76
  5. Step 5: Solve for x
    x = 119,528,146,091.76/299,087.60
  6. Step 6: Final answer
    x = 399,642.60

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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.