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Finding the Fourth Proportional to 366,911.30, 549,686.55 and 208,669.70

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Solution

The fourth proportional to 366,911.30, 549,686.55 and 208,669.70 is: 312,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,911.30 : 549,686.55 = 208,669.70 : x
  2. Step 2: Convert to fraction form
    366,911.30/549,686.55 = 208,669.70/x
  3. Step 3: Cross multiply
    366,911.30x = 549,686.55 × 208,669.70
  4. Step 4: Simplify right side
    366,911.30x = 114,702,927,482.54
  5. Step 5: Solve for x
    x = 114,702,927,482.54/366,911.30
  6. Step 6: Final answer
    x = 312,617.59

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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.