Home / 530,108.75-731,495.46-315,207.30

Finding the Fourth Proportional to 530,108.75, 731,495.46 and 315,207.30

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Solution

The fourth proportional to 530,108.75, 731,495.46 and 315,207.30 is: 434,953.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,108.75 : 731,495.46 = 315,207.30 : x
  2. Step 2: Convert to fraction form
    530,108.75/731,495.46 = 315,207.30/x
  3. Step 3: Cross multiply
    530,108.75x = 731,495.46 × 315,207.30
  4. Step 4: Simplify right side
    530,108.75x = 230,572,706,946.29
  5. Step 5: Solve for x
    x = 230,572,706,946.29/530,108.75
  6. Step 6: Final answer
    x = 434,953.59

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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.