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Finding the Fourth Proportional to 292,667.65, 439,043.31 and 90,280.85

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Solution

The fourth proportional to 292,667.65, 439,043.31 and 90,280.85 is: 135,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,667.65 : 439,043.31 = 90,280.85 : x
  2. Step 2: Convert to fraction form
    292,667.65/439,043.31 = 90,280.85/x
  3. Step 3: Cross multiply
    292,667.65x = 439,043.31 × 90,280.85
  4. Step 4: Simplify right side
    292,667.65x = 39,637,201,018.40
  5. Step 5: Solve for x
    x = 39,637,201,018.40/292,667.65
  6. Step 6: Final answer
    x = 135,434.17

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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.