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Finding the Fourth Proportional to 385,271.40, 577,907.10 and 259,300.20

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Solution

The fourth proportional to 385,271.40, 577,907.10 and 259,300.20 is: 388,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,271.40 : 577,907.10 = 259,300.20 : x
  2. Step 2: Convert to fraction form
    385,271.40/577,907.10 = 259,300.20/x
  3. Step 3: Cross multiply
    385,271.40x = 577,907.10 × 259,300.20
  4. Step 4: Simplify right side
    385,271.40x = 149,851,426,611.42
  5. Step 5: Solve for x
    x = 149,851,426,611.42/385,271.40
  6. Step 6: Final answer
    x = 388,950.30

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1.5x scale

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.