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Finding the Fourth Proportional to 371,319.95, 512,384.13 and 210,146.94

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Solution

The fourth proportional to 371,319.95, 512,384.13 and 210,146.94 is: 289,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,319.95 : 512,384.13 = 210,146.94 : x
  2. Step 2: Convert to fraction form
    371,319.95/512,384.13 = 210,146.94/x
  3. Step 3: Cross multiply
    371,319.95x = 512,384.13 × 210,146.94
  4. Step 4: Simplify right side
    371,319.95x = 107,675,953,411.41
  5. Step 5: Solve for x
    x = 107,675,953,411.41/371,319.95
  6. Step 6: Final answer
    x = 289,981.60

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1.5x scale

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.