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Finding the Fourth Proportional to 372,621, 514,346.58 and 221,714.76

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Solution

The fourth proportional to 372,621, 514,346.58 and 221,714.76 is: 306,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,621 : 514,346.58 = 221,714.76 : x
  2. Step 2: Convert to fraction form
    372,621/514,346.58 = 221,714.76/x
  3. Step 3: Cross multiply
    372,621x = 514,346.58 × 221,714.76
  4. Step 4: Simplify right side
    372,621x = 114,038,228,541.52
  5. Step 5: Solve for x
    x = 114,038,228,541.52/372,621
  6. Step 6: Final answer
    x = 306,043.48

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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.