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Finding the Fourth Proportional to 290,075.48, 400,329.50 and 169,255.69

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Solution

The fourth proportional to 290,075.48, 400,329.50 and 169,255.69 is: 233,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,075.48 : 400,329.50 = 169,255.69 : x
  2. Step 2: Convert to fraction form
    290,075.48/400,329.50 = 169,255.69/x
  3. Step 3: Cross multiply
    290,075.48x = 400,329.50 × 169,255.69
  4. Step 4: Simplify right side
    290,075.48x = 67,758,046,327.54
  5. Step 5: Solve for x
    x = 67,758,046,327.54/290,075.48
  6. Step 6: Final answer
    x = 233,587.64

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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.