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Finding the Fourth Proportional to 385,386.60, 578,069.10 and 175,024.20

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Solution

The fourth proportional to 385,386.60, 578,069.10 and 175,024.20 is: 262,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386.60 : 578,069.10 = 175,024.20 : x
  2. Step 2: Convert to fraction form
    385,386.60/578,069.10 = 175,024.20/x
  3. Step 3: Cross multiply
    385,386.60x = 578,069.10 × 175,024.20
  4. Step 4: Simplify right side
    385,386.60x = 101,176,081,772.22
  5. Step 5: Solve for x
    x = 101,176,081,772.22/385,386.60
  6. Step 6: Final answer
    x = 262,531.40

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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.