Home / 397,699.32-548,835.18-216,421.08

Finding the Fourth Proportional to 397,699.32, 548,835.18 and 216,421.08

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Solution

The fourth proportional to 397,699.32, 548,835.18 and 216,421.08 is: 298,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,699.32 : 548,835.18 = 216,421.08 : x
  2. Step 2: Convert to fraction form
    397,699.32/548,835.18 = 216,421.08/x
  3. Step 3: Cross multiply
    397,699.32x = 548,835.18 × 216,421.08
  4. Step 4: Simplify right side
    397,699.32x = 118,779,502,397.59
  5. Step 5: Solve for x
    x = 118,779,502,397.59/397,699.32
  6. Step 6: Final answer
    x = 298,666.60

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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.