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Finding the Fourth Proportional to 630,931.80, 946,052.10 and 256,531.80

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Solution

The fourth proportional to 630,931.80, 946,052.10 and 256,531.80 is: 384,657.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,931.80 : 946,052.10 = 256,531.80 : x
  2. Step 2: Convert to fraction form
    630,931.80/946,052.10 = 256,531.80/x
  3. Step 3: Cross multiply
    630,931.80x = 946,052.10 × 256,531.80
  4. Step 4: Simplify right side
    630,931.80x = 242,692,448,106.78
  5. Step 5: Solve for x
    x = 242,692,448,106.78/630,931.80
  6. Step 6: Final answer
    x = 384,657.18

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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.