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Finding the Fourth Proportional to 423,090.80, 634,636.20 and 173,772.80

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Solution

The fourth proportional to 423,090.80, 634,636.20 and 173,772.80 is: 260,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,090.80 : 634,636.20 = 173,772.80 : x
  2. Step 2: Convert to fraction form
    423,090.80/634,636.20 = 173,772.80/x
  3. Step 3: Cross multiply
    423,090.80x = 634,636.20 × 173,772.80
  4. Step 4: Simplify right side
    423,090.80x = 110,282,509,455.36
  5. Step 5: Solve for x
    x = 110,282,509,455.36/423,090.80
  6. Step 6: Final answer
    x = 260,659.20

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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.