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Finding the Fourth Proportional to 660,271.50, 911,174.67 and 358,465.50

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Solution

The fourth proportional to 660,271.50, 911,174.67 and 358,465.50 is: 494,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,271.50 : 911,174.67 = 358,465.50 : x
  2. Step 2: Convert to fraction form
    660,271.50/911,174.67 = 358,465.50/x
  3. Step 3: Cross multiply
    660,271.50x = 911,174.67 × 358,465.50
  4. Step 4: Simplify right side
    660,271.50x = 326,624,683,668.89
  5. Step 5: Solve for x
    x = 326,624,683,668.89/660,271.50
  6. Step 6: Final answer
    x = 494,682.39

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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.