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Finding the Fourth Proportional to 386,802.75, 533,779.40 and 214,710.76

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Solution

The fourth proportional to 386,802.75, 533,779.40 and 214,710.76 is: 296,296.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,802.75 : 533,779.40 = 214,710.76 : x
  2. Step 2: Convert to fraction form
    386,802.75/533,779.40 = 214,710.76/x
  3. Step 3: Cross multiply
    386,802.75x = 533,779.40 × 214,710.76
  4. Step 4: Simplify right side
    386,802.75x = 114,608,180,646.34
  5. Step 5: Solve for x
    x = 114,608,180,646.34/386,802.75
  6. Step 6: Final answer
    x = 296,296.19

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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.