Home / 221,914.50-306,242.02-121,312.50

Finding the Fourth Proportional to 221,914.50, 306,242.02 and 121,312.50

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Solution

The fourth proportional to 221,914.50, 306,242.02 and 121,312.50 is: 167,411.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,914.50 : 306,242.02 = 121,312.50 : x
  2. Step 2: Convert to fraction form
    221,914.50/306,242.02 = 121,312.50/x
  3. Step 3: Cross multiply
    221,914.50x = 306,242.02 × 121,312.50
  4. Step 4: Simplify right side
    221,914.50x = 37,150,985,051.25
  5. Step 5: Solve for x
    x = 37,150,985,051.25/221,914.50
  6. Step 6: Final answer
    x = 167,411.26

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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.