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Finding the Fourth Proportional to 353,510.81, 530,267.31 and 87,271.35

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Solution

The fourth proportional to 353,510.81, 530,267.31 and 87,271.35 is: 130,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,510.81 : 530,267.31 = 87,271.35 : x
  2. Step 2: Convert to fraction form
    353,510.81/530,267.31 = 87,271.35/x
  3. Step 3: Cross multiply
    353,510.81x = 530,267.31 × 87,271.35
  4. Step 4: Simplify right side
    353,510.81x = 46,277,143,507.44
  5. Step 5: Solve for x
    x = 46,277,143,507.44/353,510.81
  6. Step 6: Final answer
    x = 130,907.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.