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Finding the Fourth Proportional to 528,397.50, 729,188.55 and 302,047.86

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Solution

The fourth proportional to 528,397.50, 729,188.55 and 302,047.86 is: 416,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,397.50 : 729,188.55 = 302,047.86 : x
  2. Step 2: Convert to fraction form
    528,397.50/729,188.55 = 302,047.86/x
  3. Step 3: Cross multiply
    528,397.50x = 729,188.55 × 302,047.86
  4. Step 4: Simplify right side
    528,397.50x = 220,249,841,064.00
  5. Step 5: Solve for x
    x = 220,249,841,064.00/528,397.50
  6. Step 6: Final answer
    x = 416,826.05

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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.