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Finding the Fourth Proportional to 354,038.85, 488,575.80 and 210,804.93

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Solution

The fourth proportional to 354,038.85, 488,575.80 and 210,804.93 is: 290,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,038.85 : 488,575.80 = 210,804.93 : x
  2. Step 2: Convert to fraction form
    354,038.85/488,575.80 = 210,804.93/x
  3. Step 3: Cross multiply
    354,038.85x = 488,575.80 × 210,804.93
  4. Step 4: Simplify right side
    354,038.85x = 102,994,187,318.69
  5. Step 5: Solve for x
    x = 102,994,187,318.69/354,038.85
  6. Step 6: Final answer
    x = 290,912.11

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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.