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Finding the Fourth Proportional to 286,483.80, 395,347.57 and 157,430.60

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Solution

The fourth proportional to 286,483.80, 395,347.57 and 157,430.60 is: 217,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,483.80 : 395,347.57 = 157,430.60 : x
  2. Step 2: Convert to fraction form
    286,483.80/395,347.57 = 157,430.60/x
  3. Step 3: Cross multiply
    286,483.80x = 395,347.57 × 157,430.60
  4. Step 4: Simplify right side
    286,483.80x = 62,239,804,265.88
  5. Step 5: Solve for x
    x = 62,239,804,265.88/286,483.80
  6. Step 6: Final answer
    x = 217,254.18

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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.