Home / 287,430.72-396,666.66-160,106.40

Finding the Fourth Proportional to 287,430.72, 396,666.66 and 160,106.40

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Solution

The fourth proportional to 287,430.72, 396,666.66 and 160,106.40 is: 220,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,430.72 : 396,666.66 = 160,106.40 : x
  2. Step 2: Convert to fraction form
    287,430.72/396,666.66 = 160,106.40/x
  3. Step 3: Cross multiply
    287,430.72x = 396,666.66 × 160,106.40
  4. Step 4: Simplify right side
    287,430.72x = 63,508,870,932.62
  5. Step 5: Solve for x
    x = 63,508,870,932.62/287,430.72
  6. Step 6: Final answer
    x = 220,953.66

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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.