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Finding the Fourth Proportional to 380,720.01, 525,393.21 and 210,954.15

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Solution

The fourth proportional to 380,720.01, 525,393.21 and 210,954.15 is: 291,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,720.01 : 525,393.21 = 210,954.15 : x
  2. Step 2: Convert to fraction form
    380,720.01/525,393.21 = 210,954.15/x
  3. Step 3: Cross multiply
    380,720.01x = 525,393.21 × 210,954.15
  4. Step 4: Simplify right side
    380,720.01x = 110,833,878,031.32
  5. Step 5: Solve for x
    x = 110,833,878,031.32/380,720.01
  6. Step 6: Final answer
    x = 291,116.50

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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.