Home / 529,931.08-731,308.33-288,215.40

Finding the Fourth Proportional to 529,931.08, 731,308.33 and 288,215.40

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Solution

The fourth proportional to 529,931.08, 731,308.33 and 288,215.40 is: 397,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,931.08 : 731,308.33 = 288,215.40 : x
  2. Step 2: Convert to fraction form
    529,931.08/731,308.33 = 288,215.40/x
  3. Step 3: Cross multiply
    529,931.08x = 731,308.33 × 288,215.40
  4. Step 4: Simplify right side
    529,931.08x = 210,774,325,956.96
  5. Step 5: Solve for x
    x = 210,774,325,956.96/529,931.08
  6. Step 6: Final answer
    x = 397,739.13

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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.