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Finding the Fourth Proportional to 290,334.64, 435,501.75 and 90,672.13

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Solution

The fourth proportional to 290,334.64, 435,501.75 and 90,672.13 is: 136,008.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,334.64 : 435,501.75 = 90,672.13 : x
  2. Step 2: Convert to fraction form
    290,334.64/435,501.75 = 90,672.13/x
  3. Step 3: Cross multiply
    290,334.64x = 435,501.75 × 90,672.13
  4. Step 4: Simplify right side
    290,334.64x = 39,487,871,291.23
  5. Step 5: Solve for x
    x = 39,487,871,291.23/290,334.64
  6. Step 6: Final answer
    x = 136,008.13

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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.