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Finding the Fourth Proportional to 385,765.79, 532,294.77 and 242,424.34

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Solution

The fourth proportional to 385,765.79, 532,294.77 and 242,424.34 is: 334,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,765.79 : 532,294.77 = 242,424.34 : x
  2. Step 2: Convert to fraction form
    385,765.79/532,294.77 = 242,424.34/x
  3. Step 3: Cross multiply
    385,765.79x = 532,294.77 × 242,424.34
  4. Step 4: Simplify right side
    385,765.79x = 129,041,210,875.21
  5. Step 5: Solve for x
    x = 129,041,210,875.21/385,765.79
  6. Step 6: Final answer
    x = 334,506.62

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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.