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Finding the Fourth Proportional to 353,488.80, 530,038.80 and 153,775.20

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Solution

The fourth proportional to 353,488.80, 530,038.80 and 153,775.20 is: 230,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,488.80 : 530,038.80 = 153,775.20 : x
  2. Step 2: Convert to fraction form
    353,488.80/530,038.80 = 153,775.20/x
  3. Step 3: Cross multiply
    353,488.80x = 530,038.80 × 153,775.20
  4. Step 4: Simplify right side
    353,488.80x = 81,506,822,477.76
  5. Step 5: Solve for x
    x = 81,506,822,477.76/353,488.80
  6. Step 6: Final answer
    x = 230,578.23

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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.