Home / 328,031.40-492,047.10-209,836.20

Finding the Fourth Proportional to 328,031.40, 492,047.10 and 209,836.20

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Solution

The fourth proportional to 328,031.40, 492,047.10 and 209,836.20 is: 314,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,031.40 : 492,047.10 = 209,836.20 : x
  2. Step 2: Convert to fraction form
    328,031.40/492,047.10 = 209,836.20/x
  3. Step 3: Cross multiply
    328,031.40x = 492,047.10 × 209,836.20
  4. Step 4: Simplify right side
    328,031.40x = 103,249,293,685.02
  5. Step 5: Solve for x
    x = 103,249,293,685.02/328,031.40
  6. Step 6: Final answer
    x = 314,754.30

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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.