Home / 388,197,368.40-535,711,901.87-229,484,693.46

Finding the Fourth Proportional to 388,197,368.40, 535,711,901.87 and 229,484,693.46

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Solution

The fourth proportional to 388,197,368.40, 535,711,901.87 and 229,484,693.46 is: 316,688,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,197,368.40 : 535,711,901.87 = 229,484,693.46 : x
  2. Step 2: Convert to fraction form
    388,197,368.40/535,711,901.87 = 229,484,693.46/x
  3. Step 3: Cross multiply
    388,197,368.40x = 535,711,901.87 × 229,484,693.46
  4. Step 4: Simplify right side
    388,197,368.40x = 122,937,681,582,363,136
  5. Step 5: Solve for x
    x = 122,937,681,582,363,136/388,197,368.40
  6. Step 6: Final answer
    x = 316,688,601.19

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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.