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Finding the Fourth Proportional to 520,243.93, 780,428.36 and 183,214.87

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Solution

The fourth proportional to 520,243.93, 780,428.36 and 183,214.87 is: 274,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243.93 : 780,428.36 = 183,214.87 : x
  2. Step 2: Convert to fraction form
    520,243.93/780,428.36 = 183,214.87/x
  3. Step 3: Cross multiply
    520,243.93x = 780,428.36 × 183,214.87
  4. Step 4: Simplify right side
    520,243.93x = 142,986,080,521.71
  5. Step 5: Solve for x
    x = 142,986,080,521.71/520,243.93
  6. Step 6: Final answer
    x = 274,844.30

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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.