Home / 423,009.03-634,516.80-142,522.23

Finding the Fourth Proportional to 423,009.03, 634,516.80 and 142,522.23

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Solution

The fourth proportional to 423,009.03, 634,516.80 and 142,522.23 is: 213,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,009.03 : 634,516.80 = 142,522.23 : x
  2. Step 2: Convert to fraction form
    423,009.03/634,516.80 = 142,522.23/x
  3. Step 3: Cross multiply
    423,009.03x = 634,516.80 × 142,522.23
  4. Step 4: Simplify right side
    423,009.03x = 90,432,749,308.46
  5. Step 5: Solve for x
    x = 90,432,749,308.46/423,009.03
  6. Step 6: Final answer
    x = 213,784.44

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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.