Home / 290,130.50-435,319.58-163,865.54

Finding the Fourth Proportional to 290,130.50, 435,319.58 and 163,865.54

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Solution

The fourth proportional to 290,130.50, 435,319.58 and 163,865.54 is: 245,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,130.50 : 435,319.58 = 163,865.54 : x
  2. Step 2: Convert to fraction form
    290,130.50/435,319.58 = 163,865.54/x
  3. Step 3: Cross multiply
    290,130.50x = 435,319.58 × 163,865.54
  4. Step 4: Simplify right side
    290,130.50x = 71,333,876,282.34
  5. Step 5: Solve for x
    x = 71,333,876,282.34/290,130.50
  6. Step 6: Final answer
    x = 245,868.25

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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.