Home / 309,280.04-426,512.58-201,815.72

Finding the Fourth Proportional to 309,280.04, 426,512.58 and 201,815.72

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Solution

The fourth proportional to 309,280.04, 426,512.58 and 201,815.72 is: 278,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,280.04 : 426,512.58 = 201,815.72 : x
  2. Step 2: Convert to fraction form
    309,280.04/426,512.58 = 201,815.72/x
  3. Step 3: Cross multiply
    309,280.04x = 426,512.58 × 201,815.72
  4. Step 4: Simplify right side
    309,280.04x = 86,076,943,421.76
  5. Step 5: Solve for x
    x = 86,076,943,421.76/309,280.04
  6. Step 6: Final answer
    x = 278,313.93

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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.