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Finding the Fourth Proportional to 357,995.61, 493,911.00 and 221,980.61

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Solution

The fourth proportional to 357,995.61, 493,911.00 and 221,980.61 is: 306,257.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,995.61 : 493,911.00 = 221,980.61 : x
  2. Step 2: Convert to fraction form
    357,995.61/493,911.00 = 221,980.61/x
  3. Step 3: Cross multiply
    357,995.61x = 493,911.00 × 221,980.61
  4. Step 4: Simplify right side
    357,995.61x = 109,638,663,955.81
  5. Step 5: Solve for x
    x = 109,638,663,955.81/357,995.61
  6. Step 6: Final answer
    x = 306,257.01

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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.