Home / 282,780.10-390,233.80-210,506.20

Finding the Fourth Proportional to 282,780.10, 390,233.80 and 210,506.20

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Solution

The fourth proportional to 282,780.10, 390,233.80 and 210,506.20 is: 290,496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,780.10 : 390,233.80 = 210,506.20 : x
  2. Step 2: Convert to fraction form
    282,780.10/390,233.80 = 210,506.20/x
  3. Step 3: Cross multiply
    282,780.10x = 390,233.80 × 210,506.20
  4. Step 4: Simplify right side
    282,780.10x = 82,146,634,349.56
  5. Step 5: Solve for x
    x = 82,146,634,349.56/282,780.10
  6. Step 6: Final answer
    x = 290,496.52

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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.