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Finding the Fourth Proportional to 325,384.80, 487,532.84 and 212,924.40

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Solution

The fourth proportional to 325,384.80, 487,532.84 and 212,924.40 is: 319,030.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,384.80 : 487,532.84 = 212,924.40 : x
  2. Step 2: Convert to fraction form
    325,384.80/487,532.84 = 212,924.40/x
  3. Step 3: Cross multiply
    325,384.80x = 487,532.84 × 212,924.40
  4. Step 4: Simplify right side
    325,384.80x = 103,807,637,437.30
  5. Step 5: Solve for x
    x = 103,807,637,437.30/325,384.80
  6. Step 6: Final answer
    x = 319,030.38

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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.