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Finding the Fourth Proportional to 530,173.19, 731,646.51 and 288,455.93

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Solution

The fourth proportional to 530,173.19, 731,646.51 and 288,455.93 is: 398,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,173.19 : 731,646.51 = 288,455.93 : x
  2. Step 2: Convert to fraction form
    530,173.19/731,646.51 = 288,455.93/x
  3. Step 3: Cross multiply
    530,173.19x = 731,646.51 × 288,455.93
  4. Step 4: Simplify right side
    530,173.19x = 211,047,773,031.03
  5. Step 5: Solve for x
    x = 211,047,773,031.03/530,173.19
  6. Step 6: Final answer
    x = 398,073.27

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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.