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Finding the Fourth Proportional to 290,014.32, 400,130.08 and 169,069.98

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Solution

The fourth proportional to 290,014.32, 400,130.08 and 169,069.98 is: 233,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,014.32 : 400,130.08 = 169,069.98 : x
  2. Step 2: Convert to fraction form
    290,014.32/400,130.08 = 169,069.98/x
  3. Step 3: Cross multiply
    290,014.32x = 400,130.08 × 169,069.98
  4. Step 4: Simplify right side
    290,014.32x = 67,649,985,700.81
  5. Step 5: Solve for x
    x = 67,649,985,700.81/290,014.32
  6. Step 6: Final answer
    x = 233,264.29

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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.