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Finding the Fourth Proportional to 385,386.40, 578,050.80 and 160,688.80

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Solution

The fourth proportional to 385,386.40, 578,050.80 and 160,688.80 is: 241,021.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386.40 : 578,050.80 = 160,688.80 : x
  2. Step 2: Convert to fraction form
    385,386.40/578,050.80 = 160,688.80/x
  3. Step 3: Cross multiply
    385,386.40x = 578,050.80 × 160,688.80
  4. Step 4: Simplify right side
    385,386.40x = 92,886,289,391.04
  5. Step 5: Solve for x
    x = 92,886,289,391.04/385,386.40
  6. Step 6: Final answer
    x = 241,021.19

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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.