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Finding the Fourth Proportional to 348,537.80, 521,640.30 and 306,547.40

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Solution

The fourth proportional to 348,537.80, 521,640.30 and 306,547.40 is: 458,795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,537.80 : 521,640.30 = 306,547.40 : x
  2. Step 2: Convert to fraction form
    348,537.80/521,640.30 = 306,547.40/x
  3. Step 3: Cross multiply
    348,537.80x = 521,640.30 × 306,547.40
  4. Step 4: Simplify right side
    348,537.80x = 159,907,477,700.22
  5. Step 5: Solve for x
    x = 159,907,477,700.22/348,537.80
  6. Step 6: Final answer
    x = 458,795.22

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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.