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Finding the Fourth Proportional to 348,515.80, 521,607.30 and 306,525.40

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Solution

The fourth proportional to 348,515.80, 521,607.30 and 306,525.40 is: 458,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,515.80 : 521,607.30 = 306,525.40 : x
  2. Step 2: Convert to fraction form
    348,515.80/521,607.30 = 306,525.40/x
  3. Step 3: Cross multiply
    348,515.80x = 521,607.30 × 306,525.40
  4. Step 4: Simplify right side
    348,515.80x = 159,885,886,275.42
  5. Step 5: Solve for x
    x = 159,885,886,275.42/348,515.80
  6. Step 6: Final answer
    x = 458,762.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.