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Finding the Fourth Proportional to 255,478.46, 352,543.40 and 153,443.28

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Solution

The fourth proportional to 255,478.46, 352,543.40 and 153,443.28 is: 211,741.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,478.46 : 352,543.40 = 153,443.28 : x
  2. Step 2: Convert to fraction form
    255,478.46/352,543.40 = 153,443.28/x
  3. Step 3: Cross multiply
    255,478.46x = 352,543.40 × 153,443.28
  4. Step 4: Simplify right side
    255,478.46x = 54,095,415,638.35
  5. Step 5: Solve for x
    x = 54,095,415,638.35/255,478.46
  6. Step 6: Final answer
    x = 211,741.59

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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.