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Finding the Fourth Proportional to 397,364.15, 549,806.51 and 346,482.90

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Solution

The fourth proportional to 397,364.15, 549,806.51 and 346,482.90 is: 479,405.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,364.15 : 549,806.51 = 346,482.90 : x
  2. Step 2: Convert to fraction form
    397,364.15/549,806.51 = 346,482.90/x
  3. Step 3: Cross multiply
    397,364.15x = 549,806.51 × 346,482.90
  4. Step 4: Simplify right side
    397,364.15x = 190,498,554,889.89
  5. Step 5: Solve for x
    x = 190,498,554,889.89/397,364.15
  6. Step 6: Final answer
    x = 479,405.49

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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.