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Finding the Fourth Proportional to 356,007.76, 491,528.57 and 210,860.21

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Solution

The fourth proportional to 356,007.76, 491,528.57 and 210,860.21 is: 291,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,007.76 : 491,528.57 = 210,860.21 : x
  2. Step 2: Convert to fraction form
    356,007.76/491,528.57 = 210,860.21/x
  3. Step 3: Cross multiply
    356,007.76x = 491,528.57 × 210,860.21
  4. Step 4: Simplify right side
    356,007.76x = 103,643,817,665.72
  5. Step 5: Solve for x
    x = 103,643,817,665.72/356,007.76
  6. Step 6: Final answer
    x = 291,127.98

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1.5x scale

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.