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Finding the Fourth Proportional to 287,362.63, 396,572.73 and 160,038.22

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Solution

The fourth proportional to 287,362.63, 396,572.73 and 160,038.22 is: 220,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,362.63 : 396,572.73 = 160,038.22 : x
  2. Step 2: Convert to fraction form
    287,362.63/396,572.73 = 160,038.22/x
  3. Step 3: Cross multiply
    287,362.63x = 396,572.73 × 160,038.22
  4. Step 4: Simplify right side
    287,362.63x = 63,466,793,809.74
  5. Step 5: Solve for x
    x = 63,466,793,809.74/287,362.63
  6. Step 6: Final answer
    x = 220,859.59

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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.