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Finding the Fourth Proportional to 290,772.80, 435,640.80 and 249,300.80

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Solution

The fourth proportional to 290,772.80, 435,640.80 and 249,300.80 is: 373,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,772.80 : 435,640.80 = 249,300.80 : x
  2. Step 2: Convert to fraction form
    290,772.80/435,640.80 = 249,300.80/x
  3. Step 3: Cross multiply
    290,772.80x = 435,640.80 × 249,300.80
  4. Step 4: Simplify right side
    290,772.80x = 108,605,599,952.64
  5. Step 5: Solve for x
    x = 108,605,599,952.64/290,772.80
  6. Step 6: Final answer
    x = 373,506.74

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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.